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2. UniSource Energy Services - Wikipedia

   en.wikipedia.org/wiki/UniSource_Energy_Services

   UniSource Energy Services is an electric and natural gas utility company serving Arizona in the United States.It is a subsidiary of Fortis.. W. B. Foshay Co., a predecessor of Citizens Communications, acquired Southern Arizona Power of Nogales and Desert Power and Water of Kingman in 1927.

3. Southwest Gas - Wikipedia

   en.wikipedia.org/wiki/Southwest_Gas

   Southwest Gas Holdings, Inc. (NYSE: SWX) is an investor-owned utility based in Las Vegas, Nevada, United States. The company provides natural gas service to over 2 million residential, commercial, and industrial customers in parts of Arizona , Nevada , and California .

4. Pinnacle West Capital - Wikipedia

   en.wikipedia.org/wiki/Pinnacle_West_Capital

   In 1952, it merged with Arizona Edison and changed its name to Arizona Public Service. [5] The stock doubled in price through the long bear market of the 1970s, while paying a 10% dividend yield. By then it had become an electric and natural gas utility fueled 94.4% by coal plants, 5.2% by natural gas, and 0.4% by oil.

5. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   This compressor use two very closely meshing spiral rotors to compress the gas. The gas enters at the suction side and moves through the threads as the screws rotate. The meshing rotors force the gas through the compressor, and the gas exits at the end of the screws. The working area is the inter-lobe volume between the male and female rotors.

6. United Parcel Service - Wikipedia

   en.wikipedia.org/wiki/United_Parcel_Service

   United Parcel Service, Inc. (UPS) is an American multinational shipping & receiving and supply chain management company founded in 1907. [1] Originally known as the American Messenger Company specializing in telegraphs, UPS has expanded to become a Fortune 500 company [6] and one of the world's largest shipping couriers.

7. Phoenix Natural Gas - Wikipedia

   en.wikipedia.org/wiki/Phoenix_Natural_Gas

   Phoenix Natural Gas is the largest gas distribution business in Northern Ireland, being the owner and operator of the licence for the distribution network in the Greater Belfast area. The distribution business is responsible for the development of the pipeline network and also for providing a 24/7 operational and transportation service platform ...